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authorPaul Mundt <lethal@linux-sh.org>2009-06-19 11:00:00 +0400
committerPaul Mundt <lethal@linux-sh.org>2009-06-23 12:30:17 +0400
commit2eb2a4368273e123d2716a704c86f3130aa14c22 (patch)
treec76ee858fd5a17a983cd37e6881ebcfef3ab9cc7 /arch
parentb29fa1fbc210a51103c7a16af44df42cadce0361 (diff)
downloadlinux-2eb2a4368273e123d2716a704c86f3130aa14c22.tar.xz
sh: SH7786 SMP support.
SH7786 is roughly identical to SH-X3 proto SMP, though there are only 2 CPUs. This just wraps in to the existing SH-X3 SMP code with some minor changes for SH7786, including wiring up the IPIs properly, enabling IRQ_PER_CPU, and so forth. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/Kconfig7
-rw-r--r--arch/sh/kernel/cpu/sh4a/Makefile6
-rw-r--r--arch/sh/kernel/cpu/sh4a/setup-sh7786.c29
3 files changed, 18 insertions, 24 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 09c0aef31d03..eff0f2352c93 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -71,6 +71,9 @@ config GENERIC_HARDIRQS_NO__DO_IRQ
config GENERIC_IRQ_PROBE
def_bool y
+config IRQ_PER_CPU
+ def_bool y
+
config GENERIC_GPIO
def_bool n
@@ -414,6 +417,8 @@ config CPU_SUBTYPE_SH7786
select CPU_HAS_PTEAEX
select ARCH_SPARSEMEM_ENABLE
select SYS_SUPPORTS_NUMA
+ select SYS_SUPPORTS_SMP
+ select GENERIC_CLOCKEVENTS_BROADCAST if SMP
config CPU_SUBTYPE_SHX3
bool "Support SH-X3 processor"
@@ -651,7 +656,7 @@ config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
depends on SMP
- default "4" if CPU_SHX3
+ default "4" if CPU_SUBTYPE_SHX3
default "2"
help
This allows you to specify the maximum number of CPUs which this
diff --git a/arch/sh/kernel/cpu/sh4a/Makefile b/arch/sh/kernel/cpu/sh4a/Makefile
index 96ea09ca8cc1..ebdd391d5f42 100644
--- a/arch/sh/kernel/cpu/sh4a/Makefile
+++ b/arch/sh/kernel/cpu/sh4a/Makefile
@@ -16,7 +16,7 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7366) += setup-sh7366.o
obj-$(CONFIG_CPU_SUBTYPE_SHX3) += setup-shx3.o
# SMP setup
-smp-$(CONFIG_CPU_SUBTYPE_SHX3) := smp-shx3.o
+smp-$(CONFIG_CPU_SHX3) := smp-shx3.o
# Primary on-chip clocks (common)
clock-$(CONFIG_CPU_SUBTYPE_SH7763) := clock-sh7763.o
@@ -38,6 +38,6 @@ pinmux-$(CONFIG_CPU_SUBTYPE_SH7724) := pinmux-sh7724.o
pinmux-$(CONFIG_CPU_SUBTYPE_SH7785) := pinmux-sh7785.o
pinmux-$(CONFIG_CPU_SUBTYPE_SH7786) := pinmux-sh7786.o
-obj-y += $(clock-y)
-obj-$(CONFIG_SMP) += $(smp-y)
+obj-y += $(clock-y)
+obj-$(CONFIG_SMP) += $(smp-y)
obj-$(CONFIG_GENERIC_GPIO) += $(pinmux-y)
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
index 93e0d2c017e8..b70049470a0b 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
@@ -595,9 +595,8 @@ enum {
HSPI,
GPIO0, GPIO1,
Thermal,
- INTC0, INTC1, INTC2, INTC3, INTC4, INTC5, INTC6, INTC7,
-
- /* interrupt groups */
+ INTICI0, INTICI1, INTICI2, INTICI3,
+ INTICI4, INTICI5, INTICI6, INTICI7,
};
static struct intc_vect vectors[] __initdata = {
@@ -638,10 +637,12 @@ static struct intc_vect vectors[] __initdata = {
INTC_VECT(HSPI, 0xe80),
INTC_VECT(GPIO0, 0xea0), INTC_VECT(GPIO1, 0xec0),
INTC_VECT(Thermal, 0xee0),
+ INTC_VECT(INTICI0, 0xf00), INTC_VECT(INTICI1, 0xf20),
+ INTC_VECT(INTICI2, 0xf40), INTC_VECT(INTICI3, 0xf60),
+ INTC_VECT(INTICI4, 0xf80), INTC_VECT(INTICI5, 0xfa0),
+ INTC_VECT(INTICI6, 0xfc0), INTC_VECT(INTICI7, 0xfe0),
};
-/* FIXME: Main CPU support only now */
-#if 1 /* Main CPU */
#define CnINTMSK0 0xfe410030
#define CnINTMSK1 0xfe410040
#define CnINTMSKCLR0 0xfe410050
@@ -654,21 +655,6 @@ static struct intc_vect vectors[] __initdata = {
#define CnINT2MSKCR1 0xfe410a34
#define CnINT2MSKCR2 0xfe410a38
#define CnINT2MSKCR3 0xfe410a3c
-#else /* Sub CPU */
-#define CnINTMSK0 0xfe410034
-#define CnINTMSK1 0xfe410044
-#define CnINTMSKCLR0 0xfe410054
-#define CnINTMSKCLR1 0xfe410064
-#define CnINT2MSKR0 0xfe410b20
-#define CnINT2MSKR1 0xfe410b24
-#define CnINT2MSKR2 0xfe410b28
-#define CnINT2MSKR3 0xfe410b2c
-#define CnINT2MSKCR0 0xfe410b30
-#define CnINT2MSKCR1 0xfe410b34
-#define CnINT2MSKCR2 0xfe410b38
-#define CnINT2MSKCR3 0xfe410b3c
-#endif
-
#define INTMSK2 0xfe410068
#define INTMSKCLR2 0xfe41006c
@@ -753,6 +739,9 @@ static struct intc_prio_reg prio_registers[] __initdata = {
GPIO1, Thermal } },
{ 0xfe41085c, 0, 32, 8, /* INT2PRI23 */ { 0, 0, 0, 0 } },
{ 0xfe410860, 0, 32, 8, /* INT2PRI24 */ { 0, 0, 0, 0 } },
+ { 0xfe410090, 0xfe4100a0, 32, 4, /* CnICIPRI / CnICIPRICLR */
+ { INTICI7, INTICI6, INTICI5, INTICI4,
+ INTICI3, INTICI2, INTICI1, INTICI0 }, INTC_SMP(4, 2) },
};
static DECLARE_INTC_DESC(intc_desc, "sh7786", vectors, NULL,